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WS3440 Datasheet(PDF) 2 Page - Shenzhen Winsemi Microelectronics Co., Ltd

Part # WS3440
Description  Constant Current Controller For Non-isolated Buck LED Driver
PDF  8 Pages
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Manufacturer  WINSEMI [Shenzhen Winsemi Microelectronics Co., Ltd]
Direct Link  http://www.winsemi.com
Logo WINSEMI - Shenzhen Winsemi Microelectronics Co., Ltd

WS3440 Datasheet(HTML) 2 Page - Shenzhen Winsemi Microelectronics Co., Ltd

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www.winsemi.com
Tel : +86-755-8250 6288
Fax : +86-755-8250 6299
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WS3440 Product Description
WIN SEM I
M ICROELECTRON ICS
WIN SEM I
M ICROELECTRON ICS
WIN SEM I
M ICROELECTRON ICS
WIN SEM I
M ICROELECTRON ICS
WIN SEM I
M ICROELECTRON ICS
Pin
Pin
Pin
Pin Definition
Definition
Definition
Definition and
and
and
and Device
Device
Device
Device Marking
Marking
Marking
Marking
WS3440 is available in SOT23-6 package:
Pin
Pin
Pin
Pin Function
Function
Function
Function Description
Description
Description
Description
Pin
Pin
Pin
Pin Name
Name
Name
Name
Pin
Pin
Pin
Pin NO.
NO.
NO.
NO.
Description
Description
Description
Description
ROVP
1
Programmable LED open protection pin，connect a resistor to GND
GND
2
Ground
CS
3
Current sense input, the sense resistor is connected from CS to ground
S
4
HV power MOSFET source
GATE
5
HV power MOSFET gate
VCC
6
Power supply
Block
Block
Block
Block Diagram
Diagram
Diagram
Diagram
40:WS3440
Y: Year Code (0-9)
M: Month Code (1-12)
F:F: Factory No.
. 4 0 Y M F
6
1
S O T 23-6
1
2
3
6
5
4
R O V P
G N D
C S
V C C
G A T E
S
S
U V L O
In te r
su p p ly
V C C
4 0 0 m V
G N D
So ft-Drive r
4
L o g ic
&
d rive r
3 C S
R O V P 1
O C P
L in e
co mp e n sa tio n
Z e ro -Cu rre n t
De te ct
6
L ED Sh o rt
CS Sh o rt
O T P
2
L E D O P E N
PROT ECT ION
G A T E
5



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